231258864 has 40 divisors (see below), whose sum is σ = 603589840. Its totient is φ = 76290048.

The previous prime is 231258851. The next prime is 231258883. The reversal of 231258864 is 468852132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20179 + ... + 29490.

It is an arithmetic number, because the mean of its divisors is an integer number (15089746).

Almost surely, 2^231258864 is an apocalyptic number.

231258864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231258864 is an abundant number, since it is smaller than the sum of its proper divisors (372330976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231258864 is a wasteful number, since it uses less digits than its factorization.

231258864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49777 (or 49771 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 231258864 is about 15207.1977694775. The cubic root of 231258864 is about 613.8083554863.

The spelling of 231258864 in words is "two hundred thirty-one million, two hundred fifty-eight thousand, eight hundred sixty-four".